Answer:
B. from-my-brain question
Step-by-step explanation:
It wouldn't be A. prediction because it is a question, not a predicted/inferred statement.
It wouldn't be C. On-the-page question either because it is a question but is not a typical question you would read off of.
It wouldn't be D. random question because if it was, it wouldn't make sense in that time of the scenario. Most likely be, "Who was that on the phone?"